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add c++14 constexpr spectrum and wave genarator algorithms

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bolero-MURAKAMI 2014-04-20 15:25:25 +09:00
parent d1fc657c1f
commit cc48f3585a
29 changed files with 506 additions and 77 deletions
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13
sprout/iterator/sinusoid_iterator.hpp
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@ -16,9 +16,8 @@
#include <sprout/iterator/next.hpp>
#include <sprout/iterator/prev.hpp>
#include <sprout/iterator/distance.hpp>
#include <sprout/math/constants.hpp>
#include <sprout/math/sin.hpp>
#include <sprout/utility/swap.hpp>
#include <sprout/numeric/dft/detail/sinusoid.hpp>
namespace sprout {
//
@ -60,7 +59,7 @@ namespace sprout {
, frequency_(1)
, amplitude_(1)
, phase_(0)
, d_(sprout::math::two_pi<value_type>())
, d_(sprout::detail::sinusoid_value_d(frequency_))
{}
sinusoid_iterator(sinusoid_iterator const&) = default;
explicit SPROUT_CONSTEXPR sinusoid_iterator(
@ -73,7 +72,7 @@ namespace sprout {
, frequency_(frequency)
, amplitude_(amplitude)
, phase_(phase)
, d_(sprout::math::two_pi<value_type>() * frequency)
, d_(sprout::detail::sinusoid_value_d(frequency_))
{}
template<typename U>
SPROUT_CONSTEXPR sinusoid_iterator(sinusoid_iterator<U> const& it)
@ -102,9 +101,8 @@ namespace sprout {
return phase_;
}
SPROUT_CONSTEXPR reference operator*() const {
using sprout::sin;
return amplitude_ == 0 ? 0
: amplitude_ * sin(d_ * value_type(index_) + phase_)
: sprout::detail::sinusoid_value(amplitude_, phase_, d_, index_)
;
}
SPROUT_CONSTEXPR pointer operator->() const {
@ -145,9 +143,8 @@ namespace sprout {
return *this;
}
SPROUT_CONSTEXPR reference operator[](difference_type n) const {
using sprout::sin;
return amplitude_ == 0 ? 0
: amplitude_ * sin(d_ * value_type(index_ + n) + phase_)
: sprout::detail::sinusoid_value(amplitude_, phase_, d_, index_ + n)
;
}
SPROUT_CONSTEXPR sinusoid_iterator next() const {